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grin007 [14]
3 years ago
15

Which process releases heat?

Chemistry
2 answers:
borishaifa [10]3 years ago
8 0

Answer:

C

Explanation:

burning gasoline i think pls can i have brainliest if right!

Alekssandra [29.7K]3 years ago
8 0

Answer:French fries

Explanation:

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Consider the reaction of magnesium metal with hydrochloric acid to produce magnesium chloride and hydrogen gas. If 3.29 mol of m
gregori [183]

Answer:

1.645 moles of excess reactant that is of magnesium metal are left over.

Explanation:

Moles of magnesium metal = 3.29 mol

Moles of HCl = 3.29 mol

Mg(s)+2HCl(aq)\rightarrow MgCl_2(aq)+H_2(g)

According to recation, 2 moles of HCl reacts with 1 mol of magnesium metal, then 3.29 moles of HCl will react with :

\frac{1}{2}\times 3.29 mol=1.645 mol of magnesium metal

Moles of HCl left = 3.29mol - 3.29 mol = 0

Moles of magnesium metal left = 3.29 mol - 1.645 mol = 1.645 mol

1.645 moles of excess reactant that is of magnesium metal are left over.

7 0
3 years ago
Explain how he sun causes the weather
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it can influence the temperature which affects the climate and climate affects weather

5 0
3 years ago
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Which ones are false? need help please.
kirill [66]

Answer:

A.) False B.)False C.) True D.) False E.) False

Explanation:

5 0
3 years ago
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Compare the polymerisation reaction used to produce poly(ethene) with the
butalik [34]

Answer:

See explanation

Explanation:

Polymerization is the process whereby two or more monomers link together to form a compound of high molecular mass called a polymer.

There are two kinds of polymers;

-Addition polymers

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Addition polymers are formed by the joining of two or more monomers  to form a polymer without the elimination of a small molecule.

Condensation polymers are formed by the joining of two or more molecules  to form polymers with the elimination of a small molecule.

The main difference between polyethene and polyester is that polyethene is an addition polymer while polyester is a condensation polymer.

In polyethene, ethene molecules are joined together having the repeating unit as [-CH2-CH2-]n.

In polyester, the polymer arises from the reaction of carboxylic acid and an alcohol and loss of water molecules.

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If an object is not moving its kinetic energy is zero.<br><br> True<br> False
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Answer: This is true because kinetic energy depends on speed. If there's no speed, then there is no kinetic energy.

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